Ant and Dec divided I'm A Celebrity... Get me Out Of Here! viewers with a Stephen Hawking sketch on Wednesday night's show.

The Geordie duo were poking fun at Gogglebox's Scarlett Moffatt's revelation on the show that she had emailed a time travelling theory to the professor, who suffers from Motor Neurone disease.

Scarlett Moffat explains her theory on time travel

Pretending to call up the professor to ask him what he thought of Scarlett's musings, an electronic voice pretending to be Stephen, who talks using a speech synthesiser, answered that he thought it was a rubbish theory.

But while some viewers found the gag hilarious, others were offended by the mocking of Hawking.

One wrote, "I found the Stephen Hawking jokes extremely distasteful tbh (to be honest) #ImACeleb”, while another added, “Sorry what have I just watched? Ant and Dec making a joke about Stephen Hawking’s voice? Distasteful #ImACeleb @antanddec @ITV @Ofcom."

Another viewer tweeted: "Nah you don’t go after Stephen Hawking like that lads. Not cool #ImACeleb #badtaste."Others defended Ant and Dec for the joke, with viewer tweeting: "Everyone going crazy over @antanddec making a Stephen Hawking joke on @imacelebrity. Take a chill pill people."

The sketch came after Scarlett admitted during a campfire chat with Olympian Sam Quek that she had once sent Stephen an email explaining her theory about travelling in time.

"In order to travel back in time we have to go faster than the speed of light. The speed of light is like 319 and then loads of numbers, it's exactly the same latitude point as the tip of the Great Pyramid," Scarlett told Sam.

Stephen Hawking

"So I think the pyramids are from the future, I think someone from the future realised we would need them and went back in time and built them."

However, when Lisa Snowdon asked Scarlett if she had actually sent the theory to Hawking, the ditzy brunette replied: "Well, I was trying to look for his email address but it was a Hotmail account so I'm not too sure it's real."